Improvement in self-cleaning locomotive smoke-stacks



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SAMUEL M. CUMMINGS AND HENRY ISltE-AL, OE ALLEGHENY, PENNSYLVANIA,

ASSIGNORS FOR ONE-THIRD THEIR RIGHT TO RANSOM ofwarenr, OF- SAME PLACE.

Letters Patent No. 110,441, dated December 27, 1870.

IMPROVEMENT lN SELF-CLEANING LOCOMOTIVE S MOKE-STACKS.

The Schedule referred to in these Letters Patent and making of the'same.

To all whom it may concern Be it known that we, SAMUEL M. Oummrcsand HENRY ISREAL, both of the city and county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Self-Gleaning Locomotive Snioke-Stack and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had "to the accompanying drawing, and to the letters of reference marked thereon.

The nature of our'invention consists in the combination of a s'eriesof pipes with the smoke-stack and smoke-box of a locomotive, one of said pipes being provided with a series of openings; above which are arranged stop-plates or breakers, the whole being so constructed and arranged with relation to each other that live sparksor cinders? will be prevented from being ejected from the smoke-stack, but returned to the smoke-box, broken into small particles, which are subsequently ejected from the smoke-stack with the smoke and other refuse of combustion.

Our invention also relates'to the employment of the aforesaid pipes and openings in combination with the smoke-stack and box for thepurpose of creating a reaction, whereby the draught 'on the furnace is equalized by being softened, and combustion provmuted.

stack, which is shown in section at line W X offig. 1.

Figure 4 is a vertical central section of the stack -and smoke-box.

In the accorr'ipanying drawing-.-

A represents'the smoke-box or, extreme front end of the locomotive boiler. I

B represents the tubesleading through the boiler from the furnace to the smoke-box A, and'through which heat, smoke, dust, sparks, and other refuse of combustion are drawn from the fire.

' O C. represent the exhaust-pipes, which are connected with the steam-cylinders in the usual manner. D represents a lifting-pipe, the lower end, E, of which is arranged directly over the outlets ofthe exhaust-pipes O O, the whole being concentric to the pipe P, which is arranged concentric to pipe E, which is provided with a deflector, H, held in positionthrough the medium of'rods, g 'g g.-

I represents the screen-guard or netting of the I smoke-stack.

All the parts hereinbefore named are of ordinary construction, excepting'that of pipe P and the pipe F, which isprovided with openings, N N, and stopplates or breakers, 0'0 0. These openings in and stop-plates or breakers on the pipe F, in connection with the functions performed by them, constitute the I loading feature of our invention.

As. the construction and arrangementof the several parts hereinbefore described andthe relation which they bear to each other 'will be readily understood from the foregoing description and by reference to the accompanying drawing, we will therefore proceed to describe the operation of our improvement.

The exhaust steampasses from the cylinders of the locomotive through pipes C O, and is thrown upward through the smoke-box A into pipe- D, and thereby causes a partial vacuum in the smoke-box A, and the heated air, gases, smoke, cinders, andother refuse of combustion will rush from the furnace through the tuhesB to fill up the partial vacuum formed in the smoke-box A, by theaction of the exhaust steam.

"lhis rushing of heated air, gases, smoke, &c.,'through the tubes-B increases the draught of the furnace and causes live cinders to be thrown up againstv the defiector H, and, passing out from under it, fall down intothe space L, between pipes M and F, from which they are ordinarily conducted off through pipes; but,

by our arrangement of parts hereinbefore'described, the live cinders are thrown up through pipes D,.P,

and 1*, against the deflector H, and,-passing out front 7 under it, fall violently on the stops or breakers O O O, p l

and are reduced to a powdered condition, and, dropping ofl from these stops or breakers, the powdered cinders pass through the openings N N N into the passages 1%, (formed by the saddle G and pipe P,) and, passing down through this passage, fall on the enlargement S of the pipe I, from which they fall outward into the smoke-box A, to be returned through pipes D, 1, and F and thrown out through the fine meshes of the netting I'of the stack J.

By the hereiubefore-described arrangement of the pipesl), P, and F. and openings N'N N the partial vacuum formed in the smoke-box Aby the action of the exhaust steam is supplied in part with air from the smoke-stack and this air, rushing down in the space L,'and through the openings-N N N into the spaeeR, and down through it into the smoke-box A, this downward course of the air in the smoke-stack and through openings N N N will cause the live cin- (lers to fall with violence on the stops or breakers Q 0 .0, and thereby reduce them to a powdered condition, and will also counteract the violence of the P and D, substantially as and for the purpose described.

2. The openings N Y N, in combination with the passages It, for counteracting the draught on the tubes B, which communicate with the furnace, substantially as herein described.

SAMUEL M. CUMMINGS. HENRY ISREAL.

Witnesses:

RANSOM O. WRIGHT, Jas. A. Wmzms. 

